Method of forming cylindrical containers



May 29, 1951 H. F. WATERS METHOD OF FQRMING CYLINDRICAL CONTAINERS Filed June 10, 1949 2 Sheets-Sheep 1 INVENTOR' HARE) F WATER: BY 24 4:4

ATTORNEY y 1951 H. F. WATERS 2,554,722

I METHOD OF FORMING CYLINDRICALCONTAINERS Eiled June 10, '1949 2Sheets-Sheet 2 F/GB INVENTOR HARE) Ff. 14/147565 ATTORNEY Patented May 29, 1951 METHOIYOF FORMINGCYIJINDRICAL CONTAINERS HarrygFaiWaters, NewYork Nsli.

Applicationtlimem, 1949., Serial No. 98,361

Thisinvention relates to new and usefuly-immovements in containers and more particularlytoa. method of forming a cylindrical "container having a. body member 'made of a pluralityf plies of which one *ply is afluted ply;

'I'he;-use ot.:a-.fluted ply in a laminated multiple ply structure is, of course, not new with applicant. Such a fluted plyhas been utilizedin manufacturingr corrugated cardboard sheets orb'oxes. However, no r one to applicants' knowledge "has conceived the .inventive idea' of utilizing such' a plyin. combination with other plies to obtain a oylindrical container asset forth herein";

Heretofore cylindrical containers' were either mades.iof.fconvoluted-* cardboard adhered together at. its i'edgesa or were madezofj s'everallaminations of material tor-obtain: rigidity-and: strength. It great? strength were required themmany lamina-- tionswere necessary and'irrr'additi'on large quan tities of fluid andgreat pressuresvwere:needed to bind the material's together;

With. my invention the above. objects. arefiace' complished and thedifiioulties of; obtaining: a; method. for the-manufacture of. a factory made container. having a fluted 'ply'has been overcomeas .will. be described. in the following. specification whentaken in connection with. the accompanying: drawings in which;

Fig.1. is aperspective view-of asheet of-ifiuted material which. can either.- be. made of=v very thin paper or can. be.- madeuof other material; and,

Fig. 2 is a perspective.view:-of..the same sheet of fluted..paper..with. a second-plyoi. flat sheetpaper adhered together withboth ofthem-having. their longitudinal edges adhered. together. to form. a continuous wall for a tubularstructure;. and.

Fig. 3 is a perspective view. showing. the method of applying adhesive to theinteriorof the same tubularstructure shown inJFig. 2';,'and;'.

Fig; 4 is a view of .a pieceoffiat sheet material rounded into a cylindrical: formation without,-

however; having its longitudiiraledgessecuredor adhered together; and;

Fig: 5-isa perspective-view of an assembly'of the structures" shown-in Figs: '1 and4 withth'e structure: shown Fig; i -adhered rethe interior ofthe-structure shown'imFig; 2 j and;

Fig: 6- shows a device for forcing the-'membe'r showninFi'g. 4' against the interior' 'ofthe'struc ture shown in =Fi'g; 2; and;

Fig. '7 shows the" finished container" witlrtop and bottom closures affiXed theretm and? Fig. 8- we perspectiveview oftliefluted struc turey-sh'owm Fig: l I an interior -pl yof fiat sheet material adheredi thereto-sand;

thereto;

Fig. 9 isa perspective view showingan eleva tional view with part broken-away to demonstrate the -strengthening members which maybe inserted' ih-the structure as one ply thereof; and;-

Fig. 10' is a perspective elevational view shoW- ingtlie structure of Fig. 9 with an interior liner about-tobe adhered thereto; and;

Fig: 11 is aview of the same container structure shownin Fig. 10 with one end already folded and aclosure secured thereon and the other end' closure-about to be closed by an off-center" heating sealing closure; and,

Fig. 12- is a top perspective'view showing the square-folded closure of Fig. 11 completedand ready=for the attachment of another topclosure;

Referring now -to-the variousfigures shown in the attached drawings for the details of structure of my invention it will be seen in:

Fig. 1 that I have-provided a single-'sheetof fluted material I3 which may be either of very thin paper, or of any thickness ofpaper' orcardboard or-=other material desired. This fluted material l3'is shaped into'a cylindrical forma' ti on-asis shown in Fig.- 2 and has then secured thereto an outer-ply of fiat sheet material [4. Both ends-of these two plies are adhered together by-ad-h'esivesor by any other standard manner. Whenso adhered together they form a continu-- ous wall structure as shown in Fig. 2. I

In 'Fi'g. Z' there is shown the member l3 shaped into" such'cyhndrical formation with an outer ply ldadhered thereto. This outer ply M canhave its longitudinal edges secured together in overlapping'relationor can have them adhered together in abutting relation.

Itwillbenoted that both member I3 and member-"l4 can be shipped flat. For convenience in erecting the container one or more of the ends I sa can have moisture. sensitive adhesive applied The endsv of member M can also besimilarl'ytreated. The" outer ply I4 is of a somewhat :rigid butbendable. material.

After these'etwo' members orplies have been so joined togetherv and. cylindri'cally shaped the structureis then positioned over an adhesive. spraying-apparatus: (Fig.1 3) having. a rotatable sprayspipe 1-5 with apertures" 16 formed therein. througnwhichthe' adhesive is forced onto the interiorc of fluted member l3 as illustrated in Fig. 3.

The-structure, members I 3 and I 4, can be inserted.

overr'member I5 or the apparatuscan be so' ar ranged that the member l5 extendsinto-the:

structure while traveling. on a' conveyor. belt.

Whetherthatubular structure. is inserted overthei spray member or: the spray. member isxinserted.

1? to cause it to adhere to the fluted member l3.

This ply is made of somewhat rigid but bend- I able material and is usually made of flat sheet material and can, if desired, have its longitudinal edges secured together by adhesive or by any other well known method.

After the adhesive has been properly applied to the interior of the fluted ply member l3-this flat rounded sheet material I? is then inserted into the member structure shown in Fig; 2. The article will then be as illustrated in Fig. 5.

The article shown in Fig. is then positioned over a resilient member l5. This member I5 is made of a resilient material such as rubber and is adapted to be expanded when air or steam is forced therein. The member-l5 as shown has the upper end closed and the lower end formed into a nozzle into which may be inserted an air or steam pipe 18. The apparatus for forcing the air or steam into the pipe can be-standard apparatus adapted to pump air or steam. It will be seen that upon the expansion of the member l5 a force is exerted laterally against the interior member shown in Fig. 4 which will cause the said member to adhere to the fluted member.

In Fig. '7 there is shown the structure of Fig. 5

after it has been removed from the air pressure apparatus shown in Fig. 6. Attached to the top and bottom of this adhered container are closures l9 and 28. These closures are held to the main body member by friction as they are made to snugly fit the body member. The structure will then be as illustrated in Fig. 7.

- In Fig. 8 there is shown the fluted member [3 of Fig. 1 which however is formed into a cylinder with an interior flat ply adhered thereto according to the method heretofore described. To this structure there can be secured an exterior flat member or ply 2|. In some instances it is desirable to further strengthen the cylindrical container by inserting between the plies a further ply of plastic wire, wire, or similar material such as is shown at 22, as shown in Fig. 9.

In Fig. 10 there is shown a container structure cylindrically formed of a plurality of plies of which one is a fluted ply. The structure there shown has an exterior ply formed of substantially rigid material a fluted ply and an interior ply of fiat material. Prior to the insertion of the liner 24 the interior of the container structure has an adhesive applied thereto in the manner shown in Fig. 3. The container with its liner is then inserted over air pressure member IS in the same manner as is shown in Fig. 6. After the container with its liner has been removed from the pressure apparatus there will then be left a container with a liner having slip folds formed on the circumference of the liner and as illustrated in Fig. 10 diametrically opposed to each other.

In Fig. 9 there is shown the same structure of Fig. 8 with a third and fourth ply adhered to the exterior of the structure of Fig.3.. The third ply 22 can be made of plastic wire, plastic, wire or any other similar material. The outer ply 2| is similar to ply M of the structure shown in Fig. 2. The structure shown in Fig. 9 or the structure shown in Fig. 8 with ply 2| adhered thereto can then have a liner 24 inserted therethrough as shown in Fig. 10. Prior to the insertion of the liner 24 the interior of ply member I! has adhesive applied thereto in the manner shown in Fig. 3. After the adhesive has been so ap plied and the liner inserted therethrough the tubular structure and liner can then be inserted over a lateral pressure member l5 which is the same as the lateral pressure member l5 shown in Fig. 6. By the application of air or steam 1 into this lateral pressure member I5 from pipe Hi the liner 24 is caused to be adhered to ply IT. This then gives a multiply ply container having a fluted ply and an interior ply whose ends extend beyond the ends of the tubular structure of which the fluted. ply is a component part. This liner 24 has slip folds 25 formed longitudinally of the liner which folds, as illustrated, can be diametrically opposed to each other in order to obtain an off-center square-type closure for the topand for the bottom of the completed container. This off-center closure is disclosed in my prior Patent No. 2,374,793.

Referring to Fig. 11 it will be seen that the off-center sealing has been applied and I have illustrated one step in the closing of the liner. This liner can have a heat sensitive material applied to its interior such as a thermoplastic coated so that the ends of the liner as well as the-longitudinal-slip folds, if so desired, can be adhered together by. heat sealing means such as disclosed in my prior application, Serial No. 595,972, filed May 26, 1945, now abandoned. In Fig. 11 it will be seen that I have provided not only a container structure made of a plurality of plies of which one is'a fluted ply and another is a liner but I have also provided a closure means for the end of the container such as closure cap 20 in addition to the closing of the ends by square folding. This thus gives not only a siftproof container but also a fluid-tight container particularly if 'the inner ply or liner has a thermoplastic coating on its interior.

In Fig. 12 the square-fold has been applied. In both these containers the bottom has been square-folded and a friction held closure has been fitted over the bottom ends. It will be obvious that I can now apply another friction holding closure over the top and thus obtain a container which will have its exterior resembling the container shown.

In this Fig. 12, I disclose the further steps of the folding of the extended portions of the liner. The bottom thereof has already been squarefolded and thecap closure 20 has been applied thereto. This container structure is now ready for the application of a top closure which can be the same as the bottom closure 20 so that the container is closed at both ends thereof.

While I have shownv and described a preferred embodiment of my invention it should be understoodthat-I do not wish to be limited to the specific details of structure shown and described, as many modifications and variations can be made without departing from the scope of my invention. I, therefore, do not desire to be limited by the aforesaid specifications and drawings except as-such limitations are necessary in accordance with the attached claims when construed and interpreted in accordance with the statutes and law governing same.

What I claim is:

1. The method of forming a fluted ply cylindrical container structure which consists of the steps of shaping a fluted sheet of material into cylindrical formation, conforming and adhering an outer ply of material thereto, applying adhesive to the interior surface of the cylindrical structure so formed, inserting a third ply into said structure, conforming said third ply to sub stantially cylindrical shape and then applying radial pressure to the said last named ply.

2. The method of forming a fluted ply cylindrical container structure which consists of the steps of shaping a fluted sheet of material into cylindrical formation, adhering an outer ply of material thereto, applying adhesive to the interior surface of the cylindrically formed structure, inserting a third ply into said structure, conforming said third ply to a cylindrical shape, inserting a resilient air pressure member into said structure, and then forcing air into said resilient member to cause same to expand against said last named ply.

3. The method of manufacturing a cylindrical fluted ply container structure consisting of the steps of: shaping a fluted plural ply member into cylindrical formation, applying adhesive to the interior surface of said cylindrical formation, inserting a third ply into said structure and exerting sumcient pressure against said third ply to cause same to press against said fluted ply Without deforming said fluted ply.

4. The method of manufacturing a cylindrical fluted ply container structure consisting of the steps of: shaping a fluted plural ply member into cylindrical formation, applying adhesive to the interior surface of said cylindrical formation, inserting a liner into said cylinder and then applying pressure to the interior of said liner.

HARRY F. WATERS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,224,810 Cumfer Dec. 10, 1940 2,409,249 Brown Oct. 15, 1946 2,422,998 Adams et a1. June 24, 1947 2,441,699 Gramelspacher May 18,, 1948 

